If coordinator receives StreamEnd, it calls projector RestartVbucket on the
specific vbucket, using the last stability timestamp received.

Change-Id: Icec4b38072c5e264113f6e5d4a51532a7c4c37f4
Reviewed-on: http://review.couchbase.org/43886
Reviewed-by: Deepkaran Salooja <deepkaran.couchbase@gmail.com>
Reviewed-by: John Liang <johliang00@gmail.com>
Tested-by: John Liang <johliang00@gmail.com>